[HBASE-8684] Table Coprocessor can't access external HTable by default

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.98.0, 0.95.1, 0.94.9
• Assignee: Jesse Yates
• Reporter: Jesse Yates
• Created: 04/Jun/13 02:06
• Updated: 04/Jul/13 22:10
• Resolved: 05/Jun/13 23:31

Description

With the default configuration passed to a RegionCoprocessor environment, you cannot reach an HTable on the same cluster (at least in 0.94 - no verified yet in 0.96/8). The reason is in the usage of CompoundConfiguration (backported to 0.94 in HBASE-8176) when loading a table coprocessor we just do (RegionCoprocessorHost, ln 182):

Configuration newConf = new Configuration(conf);
// set per-table cfspec properties

but the conf we pass in a CompoundConfiguration, which means the copy constructor from Configuration doesn't work at all.

So, we really need two things:
1. A test that we can reach another HTable in the same cluster via a coprocessor by default
2. Fixing the configuration creation in RegionCoprocessorHost to support (1)